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hi,about dm8168 decode output yuv data format

shp ma
Prodigy 245 points


hi,everyone:
 the output of decode on dm8168  is raw YUV 420 SP format,does it support only this?our ezsdk version is ti-ezsdk_dm816x-evm_5_03_01_15,
How can I get OMX_COLOR_FormatYUV420Planar format? just only Transform from arm?
by the way, how i copy data by dma?
Thanks all!
  • 0
    TI__Genius 17215 points

    Hi,

    DM8168 supports only 420SP color format from video decoder. If you want to convert it to some other format, you will have to use the s/w. I dont think DMA would be very efficient in changing from semi planar to planar as the only operation it involves it to convert the chroma from interleaved to non-interleaved. It would be pixel based operation and would not be very effcient.

    But why do you want to chnage the format ? The display subsystem and other modules has VPSS supports 420SP format, so all operation inside DM814x will not need any other color format.

    regards

    Yashwant

  • 0 in reply to Yashwant Dutt
    Prodigy 245 points

    Thank you very much!
    Now,we will display the decoded yuv buffer by opengl in qt. We have just tried transform yuv420Planar to RGB in opengl shader program. So,
    We may need to try yuv420sp to RGB.
    Dma copy in arm side don't have a simple way like dm6467?just open "/dev/.." close?